EstradaRaymond563

For each soil boring that's completed or each well that's installed, a separate soil boring test ought to be prepared and submitted to the Department. The lithologies must be described and then classified in line with the Unified Soil Classification System (USCS). this is a modification from previous steering (October 1998 SAR steering Preparation memorandum) which only suggested the utilization of the USCS. Mandating the use of the USCS can standardize the lithology descriptions. (Note: Field personnel should be cautious on the employment of the "grading" concept utilized in the USCS, that is the opposite of the "sorting" concept that a lot of geologists are familiar with. Grading refers to the degree of mixing, whereas sorting refers to the degree of similarity.) Moisture content (typically categorized as dry, moist or damp, wet, or saturated) must be included for every sample collected (for example, at one to two foot intervals). Detailed logging of even slight lithologic variations and/or moisture content may facilitate locate potential seasonal perched zones which may be inhibiting the movement of groundwater and/or petroleum merchandise, and will assist in development of an acceptable remedial strategy.